Printing press roller



Aug. 10, 1937. F. c. MURPHY PRINTING PRESS ROLLER Filed Jan. 22, 1955 2 Sheets-Sheet l Patented Aug. 10, 1937 UNITED STATES PATENT orrice Frank G. Murphy, Baltimore, Md.

Application January 22, 1935, Serial No. 2,953

2 Claims.

This invention relates to printing press rollers, and more particularly to an arrangement for mounting such rollers to facilitate their quick assembly and dismounting.

It is the object of the invention to provide a clamping construction for a unitary press roller or series of them which is simple and economical in construction and which may be quickly and easily manipulated to eifect a change of one or more of the rollers.

The invention is applicable to any type of roller used on a press, such as printing rollers, vibrators, intermediate, and fountain rollers.

Other objects and purposes will appear from a more detailed description of the invention taken in conjunction with the accompanying drawings wherein:

Fig. 1 is a front elevation with certain parts cut away in section showing one embodiment of the invention,

Fig. 2 is a left end view of Fig. 1,

Fig. 3 is a sectional view along line 33 of Fig. 1,

Fig. 4 is a longitudinal sectional view with certain parts in elevation of the right portion of Fig. 1,

I Fig. 5 is a front elevation of a second embodiment of the invention,

Fig. 6 is a sectional view along line 66 of Fig. 5, and

Fig. 7 is a longitudinal sectional view with certain parts shown in elevation of a portion of Fig. 5.

In Fig. 1 is shown a cylindrical shaft I having the journals 2 adapted to be mounted in the printing press. A metallic sleeve 3 is carried by this shaft having the peripheral surface thereof coated with a rubber composition or equivalent coating depending upon the function of the roller.

The sleeve is provided with a bore through the center of which passes the shaft I. Although the sleeve 3 is of suflicient thickness to render it self-supporting so that a uniform contact with a line of type is maintained along the continual 5 length of the coating 5, a shoulder 3 is formed at the middle of the bore of the sleeve contacting closely with the shaft I to provide a support at that portion of the sleeve.

The internal lateral surface of the bore at each 50 side of the shoulder 3' is provided with a series of threads 4. A collar 6 is insertable in each end of the sleeve having threads 1 at one extremity thereof engaging the threads 4. A plurality of slots 9, three being shown in the illustrated em- 55 bodiment, are cut in the opposite end of each collar to impart flexibility thereto. Each collar is provided with a tapered or beveled surface 8 cooperating with a beveled surface 8' at each end of the sleeve to effect a coupling between each collar and the shaft I in the course of the ad- Vance of the collar 6 into the bore by the threaded engagement of the cooperating threads 4 and I. This advance is effected by means of a spanner wrench cooperating with depressions I0 disposed in the end face of each collar 6 (Fig. 2). In view of the fact that the internal bore of the collar 6 fits closely the shaft I, an effective coupling is obtained between the shaft and the collar and consequently between the shaft and the roller through the intermediary of the threaded engaging means 4, I. This coupling may be easily undone by a simple manipulation of the wrench, to interchange the rollers as desired.

In the embodiments shown in Figures 5-7, a plurality of rollers I5 are disposed upon a shaft I and cooperate with a plurality of groups of spaced types. In this modification, the collar I3 carrying the surface covering I5 is materially shorter than that shown in Fig. 1. The function of the shoulder I3 is not as important as that in the case of a longer sleeve. The threads I4 on the sleeve cooperate with the threads II on the collars I6 in the same manner as explained in conjunction with the first embodiment. The slots I9 in the collar occasion a coupling of the shaft with the collar by the action of the cooperating beveled surfaces I8 and I8 on the collar and sleeve respectively. In lieu of the depressions in the end surface of each collar which make possible a flush fit of the collar with the sleeve as shown in Fig. 1, the ends 20 of the collars in the modification shown in Figs. 5-7 are shaped polygonally in order to accommodate a wrench to effect easily the assembly and dismounting of the rollers upon the shaft.

Various changes to the illustrated constructions will suggest themselves to those skilled in the art without departing from the spirit of the invention as defined in the accompanying claims.

What I claim is:

1. A printing press roller comprising a cylindrical sleeve with a bore extending centrally therethrough, a shaft extending through the bore of said sleeve, end surfaces on said sleeve, a plurality of threads on the lateral surface of the bore adjacent each end thereof, a split wedge collar between said shaft and sleeve having threads at a portion thereof adapted to cooperate with said first-mentioned threads to effect a tight coupling between said sleeve and shaft with the end face of the collar terminating within the confines of the end surface of said sleeve, and Wrench engaging means provided on the end surface of said collar whereby a coupling thereof may be effected while permitting flush engagements of adjacent sleeve portions.

2. A printing press roller comprising a cylindrical sleeve with a bore extending centrally therethrough, a rubber covering on the periphery of the sleeve, a shaft extending through the bore of said sleeve, end surfaces on said sleeve extending in planes perpendicular to the axis of said sleeve and shaft, a plurality of threads on sleeve portions.

the lateralsurfac'e of the bore adjacent each end thereof, a split wedge collar between said wedge and sleeve having threads at a portion thereof adapted to cooperate with the first-mentioned threads to effect a tight coupling between the sleeve and shaft with the end face of the collar terminating in the same plane as the end surface of said sleeve, and recessed wrench engaging means provided in the end surface of said collar whereby a coupling thereof may be efiected while permitting flush engagements of adjacent FRAN K C'. MURPHY. 

